This is where this program comes in handy. This program can do mass search and replace on multiple files inside a folder with recursive and case sensitive options (No RegEx yet). Depending on how many files you have and/or how many search and replace you want to perform, this might take a few minutes. That's why I also included stats while this program is running.
It is very simple right now. I might add more features to it later.
You can only use this program with ASCII files, not Binary files. This includes *.blend, *.fbx (ASCII), and *.ma.
If you have lots of FBX files that are binary, you can convert them to ASCII using Autodesk FBX Converter.
After running this program, click on "Edit Variables" and look at the example that comes with the program. What you have to do is list all the things you want to search and replace in the form below then save the text file:
You will only set this file once. Then browse for the folder and click rename and wait...
You can Download it HERE.